Errors with new version of Omnisharp

[tilupe]

I updated my omnisharp-server this morning with the newest version via Mason (Neovim).

The server starts, but as soon as I try to use GoToDefinitio or any other method I get an error.

Error when executing textDocument/definition : Internal Error - System.MissingMethodException: Method not found: 'System.Collections.Generic.IEnumerator1<Microsoft.CodeAnalysis.NodeStateEntry1<System.ValueTuple2<System.__Canon,System.__Canon>>> Microsoft.CodeAnalysis.NodeStateTable1.GetEnumerator()'.
09:58:07 AM msg_show at Microsoft.CodeAnalysis.ExternalAccess.RazorCompiler.HostOutputNode`1.AppendOutputs(IncrementalExecutionContext context, CancellationToken cancellationToken)

[JoeRobich]

@TimothyPescatore Thanks for opening this issue. I can repro with a new project using the razor template.

@333fred @davidwengier Does this error look familiar? Does Razor need to be updated now that we took a new Roslyn?

[davidwengier]

@allisonchou knows all about this error and the pain it has caused. I was on holiday. 😛

[333fred]

We need to have O# include and prefer a matched version of the RazorCompiler external access dll (matched meaning the same version as our roslyn version). Sorry I forgot about this, I thought that the razor support was an entirely separate process and didn't need to line up with O# versions at all. See dotnet/roslyn#70176.